body {
  margin: auto;
  width: 100%;
}

.mainvisual {
  width: 1100px;
  margin: auto;
}
.mainvisual h2 {
  width: 497px;
  margin: auto;
  padding: 178px 0 144px 12px;
}

.recruit_sub {
  text-align: center;
  padding-left: 5px;
  padding-bottom: 143px;
}

#wrapper {
  width: 940px;
  margin: auto;
}

.recruitsection {
  width: 940px;
  margin: auto;
  padding-bottom: 120px;
  overflow: hidden;
}
.recruitsection h3 {
  padding-bottom: 30px;
}

.recruitimg {
  width: 300px;
  float: left;
  margin-left: 20px;
}
.recruitimg:nth-child(n + 5) {
  margin-top: 30px;
}

.recruitimg-first {
  width: 300px;
  float: left;
}
.recruitimg-first:nth-child(n + 5) {
  margin-top: 30px;
}

.recruitimg a:hover, .recruitimg-first a:hover {
  opacity: 0.7;
}

.backbtn {
  padding-top: 10px;
  padding-bottom: 47px;
}

footer {
  width: 940px;
  margin: auto;
  padding-bottom: 50px;
}

#slideshow {
  position: relative;
  width: 780px;
  height: 400px;
}
#slideshow img {
  position: absolute;
  top: 120px;
  left: 160px;
  z-index: 8;
  opacity: 0;
}
#slideshow img.active {
  z-index: 10;
  opacity: 1;
}
#slideshow img.last-active {
  z-index: 9;
}